Atlas Master 20006738 HO ACF 5701 Covered Hopper, XOMX #57710Atlas Master 20006738 HO ACF 5701 Covered Hopper, XOMX #57710 Part Number: 840245202131 Description Atlas Master 20006738 HO ACF 5701 Covered Hopper, XOMX #57710 Atlas Master 20006738 HO ACF 5701 Covered Hopper, XOMX #57710 The 5701 cubic foot covered hopper was introduced in the early Seventies for transporting bulk plastic pellets. Since 1972 ACF has built nearly 15,000 cars. Most of these were acquired by private companies including leasing